Laser Scanning Vibrometry and Holographic Interferometry Applied to Vibration Study

Abstract:

The applications of high performance materials in the aerospace and in the automotive technology in the next years need to develop new vibration study, nondestructive testing, predictive maintenance and industrial control methods.The Laser Scanning Vibrometry and Holographic Interferometry methods of vibration study and nondestructive testing by modal analysis are described. The Laser Scanning Vibrometer PSV 400 is made by Polytec GmbH and the PSV software reconstructs the 3D model of the measured micro-deformation of the object. The holographic laser system HLS-3 from Lumonics Inc. has 100 MW ruby laser peak power and 30 ns pulse width.Using mechanical excitation to induce a measurable vibration, the Laser Scanning Vibrometry and Holographic Interferometry modal analysis measurements show up the vibrational signatures and the damaged areas of the objects made by high performance materials - polymers, composites.

• Periodical: Applied Mechanics and Materials (Volume 801)
• Pages: 303-311
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.801.303
• Online since: October 2015
• Authors: Florin Breaban*, Roger Debuchy, Didier Defer
• Keywords: Holographic Interferometry, Laser Vibrometry, Modal Analysis, Nondestructive Testing, Polymers

References

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[2] Breaban, F., Allemon, P., Hazebrouck, R., Deffontaine, A. - Vibration Response of Perforated Thin Plates verified by Double Pulse Holographic Interferometry, Proceedings of the X-th Conference on Mechanical Vibrations, Timisoara 23-24 mai 2002, pp.95-100.

DOI: 10.1121/1.426361

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